Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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Write a MACRO that performs CHECKSUM test of a given data.
It takes two parameters, DATABYTES array and its LENGTH. For example, LENGTH is 5 and DATABYTES is 25h, 62h, 3Fh, 52h, E8h the last byte (E8h) is CHECKSUM byte.
Your macro will move 01h to DX if the checksum test passes, otherwise DX is reset (00h)
CHECKSUMTEST MACRO DATABYTES, LENGTH
....
ENDM
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